All categories

3 years ago

6.

Mathematics

1 answer:

larisa86 [58]3 years ago

3 0

V=ca times height
1040=40 times h
H=1040 divide by 40
Height=26

You might be interested in

: Kenneth measured a hotel and made a scale drawing. The scale he used was 1 inch =4 feet. The actual length of a room in the ho

natulia [17]

The room is 5 inches long in the drawing.

Step-by-step explanation:

Given,

Scale drawing used by Kenneth;

1 inch = 4 feet

Ratio of scale = 1:4

Actual length of room = 20 feet

Let,

x be the length in drawing

Ratio of actual length = x:20

Using proportion

Scale ratio :: Actual ratio

$1:4::x:20$

Product of mean = Product of extreme

$4*x=20*1\\4x=20$

Dividing both sides by 4

$\frac{4x}{4}=\frac{20}{4}\\x=5$

The room is 5 inches long in the drawing.

Keywords: ratio, proportion

Learn more about proportion at:

#LearnwithBrainly

8 0

2 years ago

Help please and thanks! I'll award brainliest if you show your work as well :)

iren2701 [21]

Answer:

6 inches

Step-by-step explanation:

Formula for surface area of a cylinder:

$SA=2\pi r^{2} +2\pi rh$

Plug in values and solve for the radius:

$180\pi =2\pi r^{2} +2\pi r(9)\\$

Divide both sides by $2\pi$

$90=r^{2} +r(9)$

Subtract 90 from both sides

$0=r^{2} +9r-90$

Use the quadratic equation to find the roots

$x=(-b$ ± $\sqrt{b^2-4ac})*\frac{1}{2a}$ (sorry for formatting, Brainly doesn't

allow equations with ± in them)

$x=\frac{-9+\sqrt{9^2-4*1*90} }{2(1)}$ and $x=\frac{-9-\sqrt{9^2-4*1*90} }{2(1)}$

$x=\frac{(-9+\sqrt{81+360})}{2}$ and $x=\frac{(-9-\sqrt{81+360})}{2}$

$x=\frac{(-9+\sqrt{441})}{2}$ and $x=\frac{(-9-\sqrt{441})}{2}$

$x=\frac{(-9+21)}{2}$ and $x=\frac{(-9-21)}{2}$

$x=\frac{12}{2}$ and $x=\frac{-30}{2}$

$x=6$ and $x=-15$

We can't have a negative radius, so that leaves us with r=6 in.

8 0

2 years ago

Find the domain and range of the function represented by the graph. Select all that apply.

Sveta_85 [38]

Answer:

Domain: [-2, 0, 2, 4]

Range: [3]

Step-by-step explanation:

The domain of the function are all values of x that are plotted on the horizontal axis (x-axis), while the range are the corresponding y-values plotted on the vertical axis (y-axis).

Therefore,

Domain of the function = [-2, 0, 2, 4]

Range of the function = [3] (only 1 possible value of y can be seen as plotted on the gray]

8 0

2 years ago

How to convert 8.25% to a decimal

olasank [31]

Move the decimal 2 places to the left and add zeros where it’s empty

6 0

3 years ago

Read 2 more answers

Given the equation for the total surface area of a cylinder, solve for the height of the cylinder.

schepotkina [342]

H= (2pier^2)/ 2pier all subtracted by s so the last equation from the picture.
Hope it helps!

4 0

3 years ago

Read 2 more answers